Fx: Web developer tools

by Archaeopteryx

58 Add-ons in this Collection

HttpRequester by Tom Mutdosch

Rated 4 out of 5 stars 38 reviews

45,257 users

A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

Custom User-Agent String by Arpit Kumar

Set custom User-Agent string. Also available for Firefox on Android.

Toggle JS by dbyrne

Rated 5 out of 5 stars 8 reviews

4,660 users

A simple toolbar button to quickly toggle javascript between enabled or disabled.
A green shield is shown when javascript is enabled and a red shield is shown when it is disabled

SQL Inject Me by Security Compass

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Rated 4 out of 5 stars 13 reviews

15,429 users

SQL Injection vulnerabilites can cause a lot of damage to a web application. A malicious user can possibly view records, delete records, drop tables or gain access to your server. SQL Inject-Me is Firefox Extension used to test for SQL Injection vuln...

X-Forwarded-For Header by Jakob Landbo

Rated 4 out of 5 stars 8 reviews

16,969 users

Inserts X-Forwarded-For field into the HTTP header

XSS Me by Security Compass

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Rated 4 out of 5 stars 16 reviews

11,012 users

Cross-Site Scripting (XSS) is a common flaw found in todays web applications. XSS flaws can cause serious damage to a web application. Detecting XSS vulnerabilities early in the development process will help protect a web application from unnecessary...

HTTP UserAgent cleaner by fdsc

Rated 4 out of 5 stars 22 reviews

1,591 users

Hinder tracking in internet and allows you to disable unsafe ciphers in https TLS/SSL. Evaluates the strength of the TLS (https) encryption with full log for find weak pages (in version >

HTTP Tool by Robert Byrne

Not yet rated

1,458 users

Submit http requests with varying headers, bodies etc

Header Tool by loreii

Rated 3 out of 5 stars 15 reviews

3,730 users

Open in a sidebar or in a tab and write headers directly. Simplicity, JS substitution, built-in functions, encryption, and regexp support.
You can easy modify header on each HTTP call on the Mozilla Firefox.

Profilist by Noitidart

Rated 4 out of 5 stars 24 reviews

1,833 users

Inlays a simple and quick access profile manager into the new panel-based main menu. Designed for the Australis update to Firefox.

FireBreak by Filip Johansson

Rated 4 out of 5 stars 12 reviews

3,356 users

The easiest way to find the break points in your responsive designs.

CSSsir by Razum

Rated 5 out of 5 stars 18 reviews

2,844 users

CSSsir is easy and handy tool which allows you to generate cross-browser code for main CSS- rules in a few clicks.
This CSS3 generator will be useful not only for web-masters and designers but also for common users.

Remote Control by pmorch

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Rated 5 out of 5 stars 5 reviews

2,240 users

Remote control the browser by executing any Javascript (e.g. forcing a page reload) from a TCP socket, e.g. from a script.

This allows you to refresh the browser from your IDE, or to automate tests.

LastPage by Little Spark

Rated 5 out of 5 stars 5 reviews

606 users

Reading Firefox internal pages below content.

+ Error Console
+ Restore Session
+ Troubleshooting Information
+ View Cookies
+ View Downloads
+ Manage About:Config…
+ Manage Add-ons…
+ Manage Library…
+ Manage Search Engines…

Magnifier by Girish Sharma, Paul Rouget

Rated 4 out of 5 stars 8 reviews

2,002 users

A quick restartless magnifier to debug styles and web pages.
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